When elaborating on your point, it is important to show your audience that the topics you are connecting...:
...are not mere coincidence.
When doing a lecture or a presentation, it is vital that what we say makes sense. When connecting different topics, it must be clear that we are not just randomly mentioning them, but that they are all complementary, that is, together they help convey an idea or make a point. For example, when doing a lecture on criminality, we might mention poverty, bad income distribution, education, moral values acquired during childhood, religion, etc. All of them have to do with whether an individual decides to lead a life of crime or not, but depending on how they are adressed in the same lecture, they might sound disconnected and confuse the audience. Therefore linking different topics when elaborating a point has to be done in a smooth, strategic way.